tests: wait for all flows to be installed before sending packets

Remote output flows are setup when binding of remote port is received.
Hence those flows can be setup after ports have been reported up.

- 3 HVs, 1 VIFs/HV, 1 software GW, 1 LS
- 3 HVs, 3 LS, 3 lports/LS, 1 LR
- 2 HVs, 2 LRs connected via LS, gateway router

Signed-off-by: Xavier Simonart <xsimonar@redhat.com>
Acked-by: Ales Musil <amusil@redhat.com>
Signed-off-by: Dumitru Ceara <dceara@redhat.com>

tests/ovn.at

@@ -4671,6 +4671,12 @@ OVN_POPULATE_ARP
 
 wait_for_ports_up
 check ovn-nbctl --wait=hv sync
+OVN_WAIT_REMOTE_OUTPUT_FLOWS(["hv1"],["hv2"])
+OVN_WAIT_REMOTE_OUTPUT_FLOWS(["hv2"],["hv1"])
+OVN_WAIT_REMOTE_OUTPUT_FLOWS(["hv1"],["hv_gw"])
+OVN_WAIT_REMOTE_OUTPUT_FLOWS(["hv_gw"],["hv1"])
+OVN_WAIT_REMOTE_OUTPUT_FLOWS(["hv2"],["hv_gw"])
+OVN_WAIT_REMOTE_OUTPUT_FLOWS(["hv_gw"],["hv2"])
 
 # test_packet INPORT DST SRC ETHTYPE OUTPORT...
 #
@@ -4870,6 +4876,13 @@ check ovn-nbctl --wait=hv sync
 # for ARP resolution).
 OVN_POPULATE_ARP
 
+OVN_WAIT_REMOTE_OUTPUT_FLOWS(["hv1"],["hv2"])
+OVN_WAIT_REMOTE_OUTPUT_FLOWS(["hv2"],["hv1"])
+OVN_WAIT_REMOTE_OUTPUT_FLOWS(["hv2"],["hv3"])
+OVN_WAIT_REMOTE_OUTPUT_FLOWS(["hv3"],["hv2"])
+OVN_WAIT_REMOTE_OUTPUT_FLOWS(["hv1"],["hv3"])
+OVN_WAIT_REMOTE_OUTPUT_FLOWS(["hv3"],["hv1"])
+
 # test_ip INPORT SRC_MAC DST_MAC SRC_IP DST_IP OUTPORT...
 #
 # This shell function causes a packet to be received on INPORT.  The packet's
@@ -7646,6 +7659,9 @@ ovn-nbctl lsp-add alice alice1 \
 wait_for_ports_up
 check ovn-nbctl --wait=hv sync
 
+OVN_WAIT_REMOTE_OUTPUT_FLOWS(["hv1"],["hv2"])
+OVN_WAIT_REMOTE_OUTPUT_FLOWS(["hv2"],["hv1"])
+
 # Send ip packets between foo1 and alice1
 src_mac="f00000010203"
 dst_mac="000001010203"